U.S. President Joe Biden revoked a series of executive orders that sought to ban new downloads of WeChat and TikTok and ordered a new Commerce Department review of security concerns posed by those apps, according to the White House. "President Biden revoked and replaced three EOs (executive orders) that aimed to prohibit transactions with TikTok, WeChat and eight other communications and financial technology software applications; two of these EOs are subject to litigation," the White House said in a fact sheet.